S
M
T
W
T
F
S
27
68°
41°
28
56°
40°
29
55°
46°
30
56°
46°
31
56°
43°
1
57°
46°
2
54°
50°
3
64°
48°
4
64°
39°
5
58°
37°
6
53°
44°
7
53°
50°
8
60°
52°
9
65°
50°
10
67°
48°
11
63°
44°
12
59°
38°
13
56°
37°
14
52°
38°
15
51°
45°
16
56°
43°
17
59°
42°
18
55°
46°
19
56°
50°
20
61°
50°
21
Hist. Avg.
58°
43°
22
Hist. Avg.
58°
43°
23
Hist. Avg.
58°
43°
24
Hist. Avg.
58°
43°
25
Hist. Avg.
58°
44°
26
Hist. Avg.
58°
44°
27
Hist. Avg.
58°
44°
28
Hist. Avg.
58°
44°
29
Hist. Avg.
58°
44°
30
Hist. Avg.
58°
44°
31
Hist. Avg.
58°
44°
1
Hist. Avg.
58°
44°
2
Hist. Avg.
58°
44°
3
Hist. Avg.
59°
44°
4
Hist. Avg.
59°
44°
5
Hist. Avg.
59°
44°
6
Hist. Avg.
59°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
January Weather in Charleston
Charleston's January 2027 forecast shows daily high temperatures ranging from 51° to 68°, with overnight lows between 37° and 52°. The average high for January is 58° with an average low of 45°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how January weather will actually feel in Charleston. See also: February | March | April.